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" Language: xml
" Maintainer: Johannes Zellner <johannes@zellner.org>
" Last Change: 2017 Jun 13
" Notes: 1) does not indent pure non-xml code (e.g. embedded scripts)
" 2) will be confused by unbalanced tags in comments
" or CDATA sections.
" 2009-05-26 patch by Nikolai Weibull
" TODO: implement pre-like tags, see xml_indent_open / xml_indent_close
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
let s:keepcpo= &cpo
set cpo&vim
" [-- local settings (must come before aborting the script) --]
setlocal indentexpr=XmlIndentGet(v:lnum,1)
setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
if !exists('b:xml_indent_open')
let b:xml_indent_open = '.\{-}<\a'
" pre tag, e.g. <address>
" let b:xml_indent_open = '.\{-}<[/]\@!\(address\)\@!'
endif
if !exists('b:xml_indent_close')
let b:xml_indent_close = '.\{-}</'
" end pre tag, e.g. </address>
" let b:xml_indent_close = '.\{-}</\(address\)\@!'
endif
let &cpo = s:keepcpo
unlet s:keepcpo
" [-- finish, if the function already exists --]
if exists('*XmlIndentGet')
finish
endif
let s:keepcpo= &cpo
set cpo&vim
fun! <SID>XmlIndentWithPattern(line, pat)
let s = substitute('x'.a:line, a:pat, "\1", 'g')
return strlen(substitute(s, "[^\1].*$", '', ''))
endfun
" [-- check if it's xml --]
fun! <SID>XmlIndentSynCheck(lnum)
if '' != &syntax
let syn1 = synIDattr(synID(a:lnum, 1, 1), 'name')
let syn2 = synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
if '' != syn1 && syn1 !~ 'xml' && '' != syn2 && syn2 !~ 'xml'
" don't indent pure non-xml code
return 0
elseif syn1 =~ '^xmlComment' && syn2 =~ '^xmlComment'
" indent comments specially
return -1
endif
endif
return 1
endfun
" [-- return the sum of indents of a:lnum --]
fun! <SID>XmlIndentSum(lnum, style, add)
let line = getline(a:lnum)
if a:style == match(line, '^\s*</')
return (shiftwidth() *
\ (<SID>XmlIndentWithPattern(line, b:xml_indent_open)
\ - <SID>XmlIndentWithPattern(line, b:xml_indent_close)
\ - <SID>XmlIndentWithPattern(line, '.\{-}/>'))) + a:add
else
return a:add
endif
endfun
fun! XmlIndentGet(lnum, use_syntax_check)
" Find a non-empty line above the current line.
let lnum = prevnonblank(a:lnum - 1)
" Hit the start of the file, use zero indent.
if lnum == 0
return 0
endif
if a:use_syntax_check
let check_lnum = <SID>XmlIndentSynCheck(lnum)
let check_alnum = <SID>XmlIndentSynCheck(a:lnum)
if 0 == check_lnum || 0 == check_alnum
return indent(a:lnum)
elseif -1 == check_lnum || -1 == check_alnum
return -1
endif
endif
let ind = <SID>XmlIndentSum(lnum, -1, indent(lnum))
let ind = <SID>XmlIndentSum(a:lnum, 0, ind)
return ind
endfun
let &cpo = s:keepcpo
unlet s:keepcpo
" vim:ts=8
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